Reconstructor is a toolkit for creating custom versions of the GNU/Linux operating system, specifically Debian and Ubuntu. To get started, login.
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Overview
Reconstructor is a GNU/Linux distribution customization and creation toolkit. It allows for the customization of the Ubuntu and Debian GNU/Linux distributions. Customizations include boot logo image and text color, wallpaper, themes, icons, applications, and more.

To start using Reconstructor (it’s free) go to https://build.reconstructor.org and signup.

Requirements
To use Reconstructor, you just need a modern web browser (Firefox, Safari, Chrome, etc.) with Javascript enabled. We strongly recommend against Internet Explorer, but if you must use it, Reconstructor is only known to work with Internet Explorer 8.

Documentation
View the Reconstructor User Guide

How much does it cost?
Reconstructor is free to use up to a certain amount. See Fees for details.